Title:	"Little Maintenance Over 25 Years?” – A Comprehensive Statistical Assessment of 35,000 O&M Tickets Across 5 Countries and their Techno-Economic Impacts
Author(s):	S. Lindig, S. Gallmetzer, M. Herz, D. Moser, G. Oviedo-Hernandez, S. Southern, L. Moretti
Keywords:	Monitoring, PV System Performance, Data Imputation, PV system maintenance
Topic:	PV Systems Engineering, Integrated/Applied PV
Subtopic:	Operation, Performance and Maintenance of PV Systems
Event:	8th World Conference on Photovoltaic Energy Conversion
Session:	4CP.1.3
Pages:	949 - 959
ISBN:	3-936338-86-8
Paper DOI:	10.4229/WCPEC-82022-4CP.1.3
Price:	0,00 EUR
Document(s):	paper, presentation

Abstract/Summary:

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In the framework of the H2020 project TRUST PV, steps towards an automatized, data-driven, decision support for the PV O&M sector have been investigated. Thereby, two important working areas are covered, the statistical as well as the economical evaluation of PV O&M failure tickets. A statistical evaluation is only possible if a common dictionary for ticket categorization is applied. Therefore, the TRUST-PV Risk matrix, a technical risk matrix covering all possible events within the operational phase of a conventional PV plant, has been created. Using the nomenclature of this matrix, we statistically evaluated more than 35,000 O&M tickets of over 100 PV. It has been shown that inverter and monitoring related tickets make more than 75% of all recorded tickets and there seems to be a bias towards automatically generated tickets and an underrepresentation of tickets related to components where a manual insertion is required. In the second part of this work, a concept to calculate the economic impact of O&M tickets has been developed based on information of individual tickets, PV system specific information as well as PV monitoring data.